Annealing-furnace.



No. 735,264, PATENTED AUG. 4, 190s.

s. HUXLBY, ANNEALING .FURNAGR APPLICATION FILED DBO. 31, 1902.

N0 MODEL. 4 SHEETS-SHEET l.

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we nonms PEYERS co, pHoro-mno., WASHINGTON, n. c

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PATENTED AUG. 4, 1903.

s. HUXLEY.

ANNBALING FURNACE.

APPLICATION FILED DEO. 31, 1902.

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PATENTBD AUG. 4, 1903.

` S. H UXLEY. ANNEALING FURNAGE.

APPLIOATIN FILED DEO. 31. 1902.

4 SHEBTi SHEET 3.

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HTVA/UW No. 735,264. PATBNTED AUG. 4, 190s.

s. HUXLEY. ANNBALING FURNAGB.

APPLICATION FILED DEO. 31, 1902. y

4 SHEETS-SHEET 4.

a Adm' Patented August 11, 1903.

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ATENT SAMUEL HUXLEY, OF PONTYPOOL, ENGLAND.

ANNEALlNG-FURNACE.

SPECIFICATION forming part of Letters Iatent No,y 735,264, dated August'll, 1903.

Application led December 3l, 1902. Serial No. 137,246. (No model.)

` ject of the King of Great Britain, and aresinace.

. ing twisted or otherwise aected by the heat dent ofPoutnewynydd, Pontypool, county of Monmouth, England, have invented certain new and useful Improvements in Furnaces for Annealing Metaland other Articles, of

which the following is a specification.

This invention consists in the construction and arrangement of annealing-furnaces as hereinafter described and claimed, such furnaces being particularly applicablefor annealing iron and steel sheets, the improved furnace being Yso designed thata single annealing-chamber is adapted to contain and to effectually act upon two or more rows of annealing pots, boxes, or muftles instead of, as is usual, acting upon one row only of the containers'.

A furnace constructed according to this invention is hereinafter described with` reference to theaccompanying drawings.

Figure 1 is a sectional plan view of my improved annealing-furnace, showing a double row of annealing-pots in position. Fig. 2 is a longitudinal sectional elevation of the fur- Fig. 3 is a cross-sectional elevation, and Fig. 4 shows a front elevation of the same furnace and a plan view of the arrangement for balancing the doors of `the annealingchamber.

The annealing-chamber 1 of the furnace is `constructed specially wide and shorter than usual to contain the required number of rows of pots or receptacles 2, within which the articles to be annealed, such as iron or steel sheets, are placed. In the example shown the chamber 1 is adapted to contain two parallel rows of annealing-pots 2, and these pots are constructed to be carried by balls 3, running upon ball-tracks, Fig. 3, upon the base of the annealing-chamber 1.

In the front of the chamber 1 doorways are formed for the entrance of the pots 2, and

these doorways-are conveniently closed, as

shown in the drawings, Fig. 4, by means of sliding doors 4, which are balanced by means of chains 5, passing over'pulleys 6 on" a framework 7, which is erected high above the main structure to remove any likelihood of its be- `of the furnace. The free end of the chains carry suitable weights 8, and thus the doors may be slid up and down with little labor.

The 'fire-grates 9 are arranged at one side of the annealing-chamber 1 and built entirely exterior to the main structure, thus facilitating therebuilding or the repairing of the same. The caloric gases pass from each liregrating by two or more lues 10,passing angularly underneath the floor of the annealingchamber 1 to the opposite side of the said chamber, where they enter a narrow longitudinal passage (or passages) 11, which extends the whole length of the side of the chamber 1, this passage 11 in the construction shown being divided into four sections by partitions 17. By this means the heat i's conducted from each lire-grate and equally distributed under the whole of the floor of the annealingchamber, while at the same time by this conformed in the inner side wall of the chamber 1', and thus enter one side of the latter chamber. The gases pass through this annealingchamber 1, having already heated the door of the chamber and having lost muchmof their violent action, act within the chamber upon the first row of pots, and the heated gases then pass overland around the second row of pots 2 and then pass through ports 13 in the opposite side of the chamber to that at which they entered.

The gases pass through ports 13, enter a longitudinal ilue 14 in the wall of the chamber 1, and from thence, by a passage 15, to the uptake smoke-stack 16, which is conveniently situated in the center of the length of the structure,ten din g to induce a strong natural draft.

By thus constructing and arranging my improved annealing-furnace I am enabled, as aforesaid, to contain and effectually act upon two or more rows of annealingpots, boxes, or mufiles at one time, and thereby econo'mize fuel and labor and lessen the cost of production.

It will be understood that I do not limit myself to the number of rows of annealingpots, as obviously there may be more than two rows included in one annealing-chamber so constructed. In some casesI may provide doors at each end of the chamber, one for the entrance and the other for the exitof the pots. I would also have it understood that the fire-grates can he worked with coal, naturalr `the floor ofthe annealing-chamber to conduct the caloric gases, a narrow longitudinal passage in one longitudinal wall of the annealing-chamber, with which passage the angularly-extending ues aforesaid communicate, dividing-walls in said longitudinal passage to form the latter into four chambers, one for each flue, apertures in the inner wall of said passage through which the gases pass into the annealing-chamber, and ports in the opposite longitudinal wall of the annealing-chamber and near the base thereof by which the gases nd their exit, so that the current of said gases `iiows transversely over the row of anhealing-pots for heating the same, a longitudinal Iiue in the side wall of the annealingchamber with which the exit-ports aforesaid communicate, a central passage from the longitudinal flue last named, and a smoke-stack located between the furnaces with which said for opening and closing the entrance of the 5 chamber 1, vertical guides to carry the sliding doors, chains 5 connected to said doors, a framework 7 above said doors, pulleys 6 carried high above the main structure by the framework over which said chains 5 pass, 6

ccunterweights 8 attached to the free ends of said chains in order to balance the doors, two flre-grates 9 built wholly upon the outside and at one side of said chamber l, two flues 10,

from each furnace passing angular-ly beneath 6 the door of said chamber l, a narrow longitudinal passage 11 in one side wall of said -chamber 1, dividing-walls in said longitudinal passage to form the passage into four chambers one for each flue, a number of ports 7` 12 in the wall of the chamber to permit the passage of the gases from the divided passage 11 to said chamber 1, the gases passing transversely over the pots 2 and through said chamber, exit-ports in the opposite wall of said 7, 

